Crate wscall_protocol 

Shared protocol definitions for WSCALL.

This crate contains the transport envelope, frame codec, encryption modes, and inline attachment model used by both the server and client crates.

Structs

EcdhKeypair

A freshly generated X25519 keypair for the ECDH handshake.

ErrorPayload

Standard error payload embedded in API responses and event acknowledgements.

FileAttachment

Binary attachment carried alongside JSON params or event data.

FrameCodec

Encodes and decodes WSCALL binary frames (protocol v2).

PacketEnvelope

Full transport envelope before frame encoding.

Enums

EncryptionKind

Selects how the payload section of a frame is encoded.

MessageType

Distinguishes API messages from event messages inside a WSCALL frame.

PacketBody

JSON-level message body transported inside a WSCALL frame.

ProtocolError

Errors returned while encoding or decoding WSCALL frames.

Constants

DEFAULT_MAX_FRAME_BYTES

Default maximum frame size: 100 MiB.

ECDH_DOMAIN_TAG

Domain-separation tag mixed into the SHA-256 KDF so that wscall session keys cannot collide with keys derived for any other protocol.

ECDH_KEY_LEN

Byte length of an X25519 public key (also the secret key length).

K_API_REQUEST

Compact numeric tag identifying each PacketBody variant in the JSON wire format. Using a single-byte numeric field ("k": 0) instead of a string tag ("kind": "api_request") saves several bytes per frame.

K_API_RESPONSE

K_EVENT_ACK

K_EVENT_EMIT

Functions

decode_frame

Helper for decoding a plaintext frame without constructing a custom codec.

derive_session_key

Derives a 32-byte symmetric key from a raw X25519 shared secret.

encode_frame

Helper for encoding a plaintext frame without constructing a custom codec.

parse_peer_public

Parses 32 raw bytes received from the peer into an X25519 public key.